P pcters



(No Model.)

W. B.'BRADNER.

Book Clamp. 'No. 24%,225. Patented April 19,1881.

v 17,6 ff- 2% UNITED STATES PATENT OFFICE.

WILLIAM E. BRADNER, OF NEWARK, NEW JERSEY.

BOOK-CLAM P.

SPECIFICATION forming part of Letters Patent No. 240,225, dated April 19, 1881.

Application filed February 4, 1881. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM E. BRADNER, of Newark, in the county of Essex and State of New Jersey, have invented a new and useful Improvement in Book-Clamps, of which the following is a specification.

My invention relates to handles for book- ,clamps, wherein a handlepiece is jointed to view.

H at the lower end being made to rest and turn under the strap I, (see Fig. 1,) or the bar may be divided, as shown in Fig. 6, and the hearing ends be made to pass, at the side or end, into the clamp-piece Gr. (See Figs.5 and 6.) In this case the strap K for clamping may pass along the upper side of the clamp-piece Gr, having somewhere a buckle for tightening it up; or the links of the handle may be provided with the cross-bar P, over which the strap may pass, and when the links are carried up to a vertical position they will tighten the strap or the strap K may pass over the handle-piece, as seen in Fig. l, in which event, in adjusting for use, the handle-piece is carried longitudinally in the line of the clamppiece until the links have gained ahorizontal position, as seen in Fig. 4. The strap is then buckled reasonably tight over the handlepiece, when the handle is carried up under the strap until the links regain a vertical position, and this movement effectually tightens the strap, as in the modification above described.

A stop, L, connected with the lower end' of the links may be used to prevent them from being carried over beyond about a vertical posit-ion.

The upper end of the links may be made with the rounded corner M, to allow it to catch under the book 0 through the opening N in the handle-piece, and with one square corner, O, to come up under the handle-piece. These corners are made in the two links, right and left, or one on one side and the other on the reverse, to prevent the handle-piece from turning over laterally either way.

I claim- 1. In a book-clamp, the combination of the handle-piece A, links B, clamp-piece G, and strap K, substantially as and for the purposes specified.

,2. The links B, having at the'upper end the rounded corners M and square corners O, in combination with the handle-piece A, all substantially as and for the purpose set forth.

3. The combination of the handle-piece A, the links B, and clamp-piece G, the said links being provided with the stop L, substantially as and for the purpose specified.

4. The combination of the handle-piece A, the links B, and clamp-piece G,the said links being provided with the bar P, substantially as and for the purpose set forth.

WILLIAM E. BRADNER.

Witnesses:

HORACE HARRIS, E. UMBAcH. 

